California's 4th State Assembly district

California's 4th State Assembly district
Current assemblymember	Cecilia Aguiar-Curry D–Winters
Population	474,729 [1]
Demographics	48.8% White 2.0% Black 33.6% Latino 8.9% Asian 0.8% Native American 0.3% Hawaiian/Pacific Islander 0.6% other 5.0% remainder of multiracial
Registration	46.61%  Democratic 23.86%  Republican 24.07%  No party preference

California's 4th State Assembly district is one of 80 California State Assembly districts. It is currently represented by Democrat Cecilia Aguiar-Curry of Winters.

District profile

The district encompasses much of the southern and western Sacramento Valley and Wine Country. The Coast Ranges run down the western half of the district.

Colusa County – 100% Arbuckle Williams Lake County – 100% Clearlake Lakeport Napa County – 100% American Canyon Calistoga Napa St. Helena Yountville Sonoma County – 6.20% Boyes Hot Springs Sonoma Yolo County – 100% Davis Winters Woodland West Sacramento

Election results from statewide races

Year	Office	Results [2]
2024	President [3]	Harris 63.3 – 33.4%
2021	Recall	No 65.1 – 34.9%
2020	President	Biden 66.3 – 31.2%
2018	Governor	Newsom 63.9 – 36.1%
	Senator	Feinstein 51.5 – 48.5%
2016	President	Clinton 62.8 – 29.8%
	Senator	Harris 67.2 – 32.8%
2014	Governor	Brown 66.4 – 33.6%
2012	President	Obama 63.2 – 33.9%
	Senator	Feinstein 65.7 – 34.3%

List of assembly members representing the district

Due to redistricting, the 4th district has been moved around different parts of the state. The current iteration resulted from the 2021 redistricting by the California Citizens Redistricting Commission.

Assembly members	Party	Years served	Counties represented	Notes
John Yule	Republican	January 5, 1885 – January 3, 1887	Shasta, Trinity
Thaddeus Wilton Huff Shanahan	Democratic	January 3, 1887 – January 2, 1893
William P. Mathews		January 2, 1893 – January 7, 1895	Tehama, Trinity
Daniel Garrard Reid		January 7, 1895 – January 4, 1897
Frank Houghton		January 4, 1897 – January 2, 1899
W. H. La Bare	Republican	January 2, 1899 – January 5, 1901
H. S. Gans		January 5, 1901 – January 5, 1903
George Adolf Grotefend	Democratic	January 5, 1903 – January 2, 1905	Lassen, Modoc, Shasta
J. H. Creighton	Republican	January 2, 1905 – January 7, 1907
Nathan A. Cornish		January 7, 1907 – January 4, 1909
Arthur M. Dean		January 4, 1909 – January 2, 1911
James Halar Tibbits		January 2, 1911 – January 6, 1913
Albert Franklin Shartel		January 6, 1913 – January 8, 1917	Plumas, Lassen, Modoc, Sierra
Arthur Joseph Mathews		January 8, 1917 – January 3, 1921
Franklin J. Powers		January 3, 1921 – January 8, 1923
Arthur Joseph Mathews		January 8, 1923 – January 5, 1925
N. V. Wemple		January 5, 1925 – January 7, 1929
Forrest R. Young	Democratic	January 7, 1929 – January 5, 1931
Edwin Albert McDaniel		January 5, 1931 – January 2, 1933	Colusa, Glenn, Tehama
John Evangelist Frazier	Republican	January 2, 1933 – January 4, 1937	Butte Sutter, Yuba County, California
Seth Millington	Democratic	January 4, 1937 – January 4, 1943
Albert M. King		January 4, 1943 – January 6, 1947
Bert Willits Loomis	Republican	January 6, 1947 – January 3, 1949
Arthur William Coats Jr.	Democratic	January 3, 1949 – January 5, 1953
Don Hobbie	Republican	January 5, 1953 – September 20, 1955		Died in office from a heart attack. [4]
Vacant		September 20, 1955 – October 17, 1955
Harold Thomas Sedgwick	Republican	October 17, 1955 – January 7, 1963		He was sworn in after the death of his predecessor after winning the special election. [5]
Harold E. Booth	Democratic	January 7, 1963 - January 4, 1965	Butte, Colusa, Sutter, Glenn, Yolo
Ray E. Johnson	Republican	January 4, 1965 – November 30, 1974
			Butte, Colusa, Sutter, Glenn, Lake, Yolo
Edwin L. Z'berg	Democratic	December 2, 1974 – August 26, 1975	Sacramento, Solano, Yolo	Died in office at his apartment from a heart attack. [6]
Vacant		August 26, 1975 – December 10, 1975
Vic Fazio	Democratic	December 10, 1975 – November 30, 1978		He was sworn in after the death of his predecessor, after winning the special election. [7]
Thomas M. Hannigan		December 4, 1978 – November 30, 1992	Solano, Yolo
David Knowles	Republican	December 7, 1992 – November 30, 1996	Alpine, Amador, Calaveras, El Dorado, Mono, Placer
Rico Oller		December 2, 1996 – November 30, 2000
Tim Leslie		December 4, 2000 – November 30, 2006
			Alpine, El Dorado, Placer, Sacramento
Ted Gaines		December 4, 2006 – January 6, 2011		Resigned after winning the State Senate special election in the 1st district and eventually succeeded by his wife.
Vacant		January 6, 2011 – May 12, 2011
Beth Gaines	Republican	May 12, 2011 – November 30, 2012		Won the 2011 special election in her husband's district.
Mariko Yamada	Democratic	December 3, 2012 – November 30, 2014	Colusa, Lake, Napa, Solano, Sonoma, Yolo
Bill Dodd		December 1, 2014 – November 30, 2016
Cecilia Aguiar-Curry		December 5, 2016 – present
			Colusa, Lake, Napa, Sonoma, Yolo

Election results (1990–present)

• 1990
• 1992
• 1994
• 1996
• 1998
• 2000
• 2002
• 2004
• 2006
• 2008
• 2010
• 2011 (special)
• 2012
• 2014
• 2016
• 2018
• 2020
• 2022
• 2024

2024

2024 California State Assembly 4th district election ^{[8] [9]}

Primary election
Party		Candidate	Votes	%
	Democratic	Cecilia Aguiar-Curry (incumbent)	78,623	99.3
	Republican	Darren Ellis (write-in)	525	0.6
	Democratic	Sherman McFarland (write-in)	102	0.1
Total votes			79,250	100.0
General election
	Democratic	Cecilia Aguiar-Curry (incumbent)	133,421	66.5
	Republican	Darren Ellis	67,277	33.5
Total votes			200,698	100.0
	Democratic hold

2022

2022 California State Assembly 4th district election ^{[10] [11]}

Primary election
Party		Candidate	Votes	%
	Democratic	Cecilia Aguiar-Curry (incumbent)	70,593	67.1
	Republican	Bryan Pritchard	34,532	32.8
	No party preference	Susan G. Pelican (write-in)	36	0.0
Total votes			105,161	100.0
General election
	Democratic	Cecilia Aguiar-Curry (incumbent)	99,342	64.9
	Republican	Bryan Pritchard	53,734	35.1
Total votes			153,076	100.0
	Democratic hold

2020

2020 California State Assembly 4th district election ^{[12] [13]}

Primary election
Party		Candidate	Votes	%
	Democratic	Cecilia Aguiar-Curry (incumbent)	83,861	58.5
	Republican	Matthew L. Nelson	42,960	30.0
	Democratic	Sophia Racke	16,570	11.6
Total votes			143,391	100.0
General election
	Democratic	Cecilia Aguiar-Curry (incumbent)	150,157	66.7
	Republican	Matthew L. Nelson	75,110	33.3
Total votes			225,267	100.0
	Democratic hold

2018

2018 California State Assembly 4th district election ^{[14] [15]}

Primary election
Party		Candidate	Votes	%
	Democratic	Cecilia Aguiar-Curry (incumbent)	77,882	99.5
	Libertarian	Brandon Z. Nelson (write-in)	132	0.2
	Republican	Cherylyn A. Nutting (write-in)	130	0.2
	Green	Sarah Joan Fulton (write-in)	128	0.2
Total votes			78,272	100.0
General election
	Democratic	Cecilia Aguiar-Curry (incumbent)	122,657	75.2
	Libertarian	Brandon Z. Nelson	40,398	24.8
Total votes			163,055	100.0
	Democratic hold

2016

2016 California State Assembly 4th district election ^{[16] [17]}

Primary election
Party		Candidate	Votes	%
	Democratic	Cecilia Aguiar-Curry	36,043	29.2
	Republican	Charlie Schaupp	35,454	28.7
	Democratic	Dan Wolk	31,405	25.4
	Democratic	Don Saylor	18,284	14.8
	Democratic	Elmer Mark Kropp	2,281	1.8
Total votes			123,467	100.0
General election
	Democratic	Cecilia Aguiar-Curry	118,772	63.5
	Republican	Charlie Schaupp	68,170	36.5
Total votes			186,942	100.0
	Democratic hold

2014

2014 California State Assembly 4th district election ^{[18] [19]}

Primary election
Party		Candidate	Votes	%
	Democratic	Bill Dodd	22,168	26.4
	Republican	Charlie Schaupp	21,873	26.1
	Democratic	Dan Wolk	19,963	23.8
	Democratic	Joe Krovoza	14,993	17.9
	Republican	Dustin Call	4,939	5.9
Total votes			83,936	100.0
General election
	Democratic	Bill Dodd	70,598	61.6
	Republican	Charlie Schaupp	43,981	38.4
Total votes			114,579	100.0
	Democratic hold

2012

2012 California State Assembly 4th district election ^{[20] [21]}

Primary election
Party		Candidate	Votes	%
	Democratic	Mariko Yamada (incumbent)	51,821	59.2
	Republican	John Munn	35,664	40.8
Total votes			87,485	100.0
General election
	Democratic	Mariko Yamada (incumbent)	108,081	62.5
	Republican	John Munn	64,946	37.5
Total votes			173,027	100.0
	Democratic gain from Republican

2011 (special)

2011 California State Assembly 4th district special election
Vacancy resulting from the resignation of Ted Gaines ^{[22] [23]}

Primary election
Party		Candidate	Votes	%
	Democratic	Dennis Campanale	21,977	31.3
	Republican	Beth Gaines	15,952	22.7
	Republican	John Allard	15,226	21.7
	Republican	Cheryl Bly-Chester	6,788	9.7
	Republican	Michael F. O'Connor	3,929	5.6
	Republican	Rob Matthews	2,753	3.9
	Republican	Matt Williams	2,703	3.9
	Republican	"Bo" Bogdan Ambrozewicz	877	1.2
Total votes			70,205	100.0
General election
	Republican	Beth Gaines	41,144	55.6
	Democratic	Dennis Campanale	32,878	44.4
Total votes			74,022	100.0
	Republican hold

2010

2010 California State Assembly 4th district election ^[24]

Party		Candidate	Votes	%
	Republican	Ted Gaines (incumbent)	109,672	58.8
	Democratic	Dennis J. Campanale	68,306	36.6
	Peace and Freedom	Daniel D. Frederick	8,647	4.6
Total votes			186,625	100.0
	Republican hold

2008

2008 California State Assembly 4th district election ^[25]

Party		Candidate	Votes	%
	Republican	Ted Gaines (incumbent)	166,736	100.0
Total votes			166,736	100.0
	Republican hold

2006

2006 California State Assembly 4th district election ^[26]

Party		Candidate	Votes	%
	Republican	Ted Gaines	96,958	58.8
	Democratic	Robert Haswell	57,401	34.8
	Libertarian	Michael Murphy	5,423	3.3
	Green	Gerald Fritts	5,025	3.0
Total votes			164,807	100.0
	Republican hold

2004

2004 California State Assembly 4th district election ^[27]

Party		Candidate	Votes	%
	Republican	Tim Leslie (incumbent)	140,105	66.7
	Democratic	Todd W. Schwenk	70,008	33.3
Total votes			210,113	100.0
	Republican hold

2002

2002 California State Assembly 4th district election ^[28]

Party		Candidate	Votes	%
	Republican	Tim Leslie (incumbent)	91,022	66.6
	Democratic	Scott Warren	45,722	33.4
Total votes			136,744	100.0
	Republican hold

2000

2000 California State Assembly 4th district election ^[29]

Party		Candidate	Votes	%
	Republican	Tim Leslie	144,844	66.9
	Democratic	Stephen A. Macola	71,492	33.1
Total votes			216,336	100.0
	Republican hold

1998

1998 California State Assembly 4th district election ^[30]

Party		Candidate	Votes	%
	Republican	Rico Oller (incumbent)	103,688	61.7
	Democratic	Mark A. Norberg	57,492	34.2
	Libertarian	Robert L. "Bob" Mulvany	6,980	4.2
Total votes			168,160	100.0
	Republican hold

1996

1996 California State Assembly 4th district election ^[31]

Party		Candidate	Votes	%
	Republican	Thomas "Rico" Oller	105,257	57.9
	Democratic	Erike J. Young	76,193	41.9
	No party	Karen Smith (write-in)	349	0.2
Total votes			181,799	100.0
	Republican hold

1994

1994 California State Assembly 4th district election ^[32]

Party		Candidate	Votes	%
	Republican	David Knowles (incumbent)	101,020	65.0
	Democratic	Charles W. "Charlie" Fish	47,700	30.7
	Libertarian	Clyde B. Smith	6,774	4.4
Total votes			155,494	100.0
	Republican hold

1992

1992 California State Assembly 4th district election ^[33]

Party		Candidate	Votes	%
	Republican	David Knowles (incumbent)	102,578	56.1
	Democratic	Mark A. Norberg	64,400	35.2
	Libertarian	Gary Hines	15,720	8.6
Total votes			182,698	100.0
	Republican gain from Democratic

1990

1990 California State Assembly 4th district election ^[34]

Party		Candidate	Votes	%
	Democratic	Thomas M. Hannigan (incumbent)	62,764	57.9
	Republican	John W. Ford	38,582	35.6
	Libertarian	Jack M. Presley	7,073	6.5
Total votes			108,419	100.0
	Democratic hold

See also

• California State Assembly
• California State Assembly districts
• Districts in California

References

1. "Census Bureau Tables".
2. "2020 Presidential by Legislative District & Most Recent Election Result". CNalysis. Archived from the original on June 4, 2021. Retrieved June 9, 2021.
3. "Statement of Vote" (PDF). elections.cdn.sos.ca.gov. 2024.
4. "Senator, Assemblyman Die Of Heart Attacks". cdnc.ucr.edu.
5. "Harold Thomas Sedgwick Sworn in" (PDF). clerk.assembly.ca.gov.
6. "Z'berg Dies". cdnc.ucr.edu.
7. "Vic Fazio takes Oath of office" (PDF). clerk.assembly.ca.gov.
8. "March 5, 2024, Presidential Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
9. "November 5, 2024, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
10. "June 7, 2022, Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
11. "November 8, 2022, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
12. "March 3, 2020, Presidential Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
13. "November 3, 2020, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
14. "June 5, 2018, Statewide Direct Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
15. "November 6, 2018, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
16. "June 7, 2016, Presidential Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
17. "November 8, 2016, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
18. "June 3, 2014, Statewide Direct Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
19. "November 4, 2014, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
20. "June 5, 2012, Presidential Primary Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
21. "November 6, 2012, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
22. "Official Canvass - State Assemblymember - 4th Assembly District* - Special Primary Election, March 8, 2011" (PDF). Secretary of State of California .
23. "Official Canvass - State Assemblymember - 4th Assembly District* - Special General Election, May 3, 2011" (PDF). Secretary of State of California .
24. "November 2, 2010, General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
25. "November 4, 2008, Presidential General Election - State Assemblymember" (PDF). Secretary of State of California . Retrieved November 11, 2025.
26. "November 7, 2006, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
27. "November 2, 2004, Presidential General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
28. "November 5, 2002, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
29. "November 7, 2000, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
30. "November 3, 1998, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
31. "November 5, 1996, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
32. "November 8, 1994, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
33. "November 3, 1992, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.
34. "November 6, 1990, General Election - Member of the State Assembly" (PDF). Secretary of State of California . Retrieved November 11, 2025.

External links

• District map from the California Citizens Redistricting Commission